diff --git a/Development-Quickstart.md b/Development-Quickstart.md
index 2cb4246..1ca5f06 100644
--- a/Development-Quickstart.md
+++ b/Development-Quickstart.md
@@ -2,7 +2,7 @@
 
 You will need a working Go and Node.js environment.  Installing [Swaks](http://www.jetmore.org/john/code/swaks/) is recommended to generate test mail.
 
-_Note:_ While it is possible to develop on Windows, Linux or Mac OS is required to use most of our helper scripts.
+_Note:_ While it is possible to develop on Windows; Linux or Mac OS is required to use most of our helper scripts.
 
 ## Initial build